class Lady{
    content="hello，你好！";
    sayHello(){
        return this.content
    }
}
class XiaoJieJie extends Lady{
    sayHello(){
        return super.sayHello()+"吃饭了吗？"
    }
    sayLove(){
        return "你叫什么名字"
    }
}
const goddess = new XiaoJieJie();
console.log(goddess.sayHello())
console.log(goddess.sayLove())

